Vulnerability-Lookup

GHSA-5PVX-6XR7-WR9X

Vulnerability from github – Published: 2026-10-18 18:31 – Updated: 2026-10-18 18:31

Details

In the Linux kernel, the following vulnerability has been resolved:

nfc: llcp: fix WKS SAP hijacking via prefix match in nfc_llcp_wks_sap()

nfc_llcp_wks_sap() compares only service_name_len bytes, so a short service_name like "u" matches longer WKS strings like "urn:nfc:sn:snep". Fix by requiring exact length match before strncmp().

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98577"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-18T16:17:10Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: llcp: fix WKS SAP hijacking via prefix match in nfc_llcp_wks_sap()\n\nnfc_llcp_wks_sap() compares only service_name_len bytes, so a short\nservice_name like \"u\" matches longer WKS strings like \"urn:nfc:sn:snep\".\nFix by requiring exact length match before strncmp().",
  "id": "GHSA-5pvx-6xr7-wr9x",
  "modified": "2026-10-18T18:31:54Z",
  "published": "2026-10-18T18:31:54Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98577"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0a0412745c86acd089c6460da715ab966b1615e7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0c83a8a45fed256ccc5fe7160b436b671fc79fb8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/32b5f0b338bf59391a1cff9a6190a72c4d2c1ba8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/408cff6bd60636df201274d320edfdfde9ed41db"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6fad2c34d451d11a9f3f946cae1105fee91d96b8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aa555ed5ed0d15efbaf27e0e9f152a6df715278a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf41af8f910cbb5d776a1dfa0671d31a7e262e28"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f234197f3bda3aea5d4b1e591d6bcb3660a8b3fc"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98577 (GCVE-0-2026-98577)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:18 – Updated: 2026-10-19 09:22

Title

nfc: llcp: fix WKS SAP hijacking via prefix match in nfc_llcp_wks_sap()

Summary

In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: fix WKS SAP hijacking via prefix match in nfc_llcp_wks_sap() nfc_llcp_wks_sap() compares only service_name_len bytes, so a short service_name like "u" matches longer WKS strings like "urn:nfc:sn:snep". Fix by requiring exact length match before strncmp().

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7018 records in the last 180 days details

References

8 references

URL	Tags
https://git.kernel.org/stable/c/0c83a8a45fed256cc…
https://git.kernel.org/stable/c/aa555ed5ed0d15efb…
https://git.kernel.org/stable/c/32b5f0b338bf59391…
https://git.kernel.org/stable/c/6fad2c34d451d11a9…
https://git.kernel.org/stable/c/bf41af8f910cbb5d7…
https://git.kernel.org/stable/c/f234197f3bda3aea5…
https://git.kernel.org/stable/c/0a0412745c86acd08…
https://git.kernel.org/stable/c/408cff6bd60636df2…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d646960f7986fefb460a2b062d5ccc8ccfeacc3a , < 0c83a8a45fed256ccc5fe7160b436b671fc79fb8 (git) Affected: d646960f7986fefb460a2b062d5ccc8ccfeacc3a , < aa555ed5ed0d15efbaf27e0e9f152a6df715278a (git) Affected: d646960f7986fefb460a2b062d5ccc8ccfeacc3a , < 32b5f0b338bf59391a1cff9a6190a72c4d2c1ba8 (git) Affected: d646960f7986fefb460a2b062d5ccc8ccfeacc3a , < 6fad2c34d451d11a9f3f946cae1105fee91d96b8 (git) Affected: d646960f7986fefb460a2b062d5ccc8ccfeacc3a , < bf41af8f910cbb5d776a1dfa0671d31a7e262e28 (git) Affected: d646960f7986fefb460a2b062d5ccc8ccfeacc3a , < f234197f3bda3aea5d4b1e591d6bcb3660a8b3fc (git) Affected: d646960f7986fefb460a2b062d5ccc8ccfeacc3a , < 0a0412745c86acd089c6460da715ab966b1615e7 (git) Affected: d646960f7986fefb460a2b062d5ccc8ccfeacc3a , < 408cff6bd60636df201274d320edfdfde9ed41db (git)
Linux	Linux	Affected: 3.3 Unaffected: 0 , < 3.3 (semver) Unaffected: 5.10.271 , ≤ 5.10.* (semver) Unaffected: 5.15.222 , ≤ 5.15.* (semver) Unaffected: 6.1.189 , ≤ 6.1.* (semver) Unaffected: 6.6.158 , ≤ 6.6.* (semver) Unaffected: 6.12.112 , ≤ 6.12.* (semver) Unaffected: 6.18.55 , ≤ 6.18.* (semver) Unaffected: 7.2.9 , ≤ 7.2.* (semver) Unaffected: 7.3 , ≤ * (original_commit_for_fix)

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          "programFiles": [
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              "status": "unaffected",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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